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Added check for alerting when nDPI modified packet payload (should not happen)

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This commit is contained in:
Luca Deri 2016-04-04 21:40:23 +02:00
parent f437fac412
commit 6a63ea46a4
1 changed files with 9 additions and 2 deletions
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11
example/ndpiReader.c
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@ -1620,8 +1620,8 @@ static void pcap_packet_callback(u_char *args,
int llc_off;
int pyld_eth_len = 0;
int check;
u_int32_t fcs;
char packet_copy[1600];
u_int32_t fcs, packet_copy_len = sizeof(packet_copy);;
u_int64_t time;
u_int16_t ip_offset, ip_len, ip6_offset;
u_int16_t frag_off = 0, vlan_id = 0;
@ -1643,6 +1643,9 @@ static void pcap_packet_callback(u_char *args,
return;
}
if(header->caplen < packet_copy_len) packet_copy_len = header->caplen;
memcpy(packet_copy, packet, packet_copy_len);
/* Check if capture is live or not */
if (!live_capture) {
if (!pcap_start.tv_sec) pcap_start.tv_sec = header->ts.tv_sec, pcap_start.tv_usec = header->ts.tv_usec;
@ -1931,6 +1934,10 @@ static void pcap_packet_callback(u_char *args,
/* process the packet */
packet_processing(thread_id, time, vlan_id, iph, iph6,
ip_offset, header->len - ip_offset, header->len);
if(memcmp(packet_copy, packet, packet_copy_len) != 0)
printf("INTERNAL ERROR: ingress packet was nodified by nDPI: this should not happen [thread_id=%u, packetId=%lu]\n",
thread_id, (unsigned long)ndpi_thread_info[thread_id].stats.raw_packet_count);
}
/* ******************************************************************** */